Improvement in wax-thread sewing-machines



/ 2Sheets--Sheet1. E

E. E. BEAN.

I Wax-Thread Sewing-Machines.

N0,l54,H5 Patented Aug. 18,1874.

NE GRAPHIC CQPHDYD'LITFLZSRM PARK PLACE, NY.

2 Sheets --Shet 2.

E E. BEAN. Wax-Thread Sewing-Machines.

Patented Aug. 18,1874.

THE GRAPHIC CU,FNOYO UYN.39&4I PARK PLACEJLY.

UNITED STATES PATENT OFFICE.

EDWIN E. BEAN, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN WAX-THREAD SEWING-MACHINES.

Specification forming part of Letters Patent No. 154,115, dated August18, 1874; application filed May 26, 1873.

To all whom it may concern Be it known that I, EDWIN E. BEAN, of Boston,in the county of Suffolk and State of Massachusetts, have inventedcertain new and useful Improvements in Wax-Thread Sewing-Machines; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use it, reference being had to theaccompanying 1drawings, which form part of this specificaion.

My invention relates to improvements in wax-thread sewing-machines forthe purpose of sewing the uppers and soles together on turned shoes,slippers, &c., consisting in the employment of a presser-foot arrangedcentrally with the needle when in its central position, whereby the workis held more firmly in its place as compared with the old way of havingthe presser-foot arranged in front or behind the needle. During thefeeding of the work the presser-foot is lifted upward, and also movedsidewise from the work, so as to allow for the advancement of the work adistance equal to the length of the stitch. By arranging and operatingthe presser foot in relation to the needle, as above named, I am alsoenabled to sew around sharp curves or angles-such as the toe and heelparts of the sole-with greater ease and without injury to the work.

On the drawing, Figure 1 represents a side elevation of a waxthreadsewing-machine hav in g my improvedpresser-foot attached thereto. Fig. 2represents a side elevation of the improved presser -foot and itsintervening mechanism. Fig. 3 represents an end view, seen from X onFig. 2; and Fig. 4 represents a cross-section on the line A B, shown onSimilar letters refer to similar parts wherever they occur on thedifferent parts of thedrawing.

a. represents the hooked presser-foot generally used for the purpose ofsewing turned shoes by machinery. The said presser-foot a is hinged at bto a spring-bar, c, that is attached at its rear end d to a stationarypost, e, or its equivalent. The resser-foot is provided with a suitablepresser-foot bar, f, that is operated by means of the arm 9 attached tothe reciprocating awl-bar h, as fully shown in Figs. 1 and 2. Theawl-bar h is operated in any of the ordinary ways. The upper end of thepresserfoot bar f is screw-threaded, and provided with check-nuts i 6,whereby the lift of the presser-foot can be regulated.

Besides the vertical motion of the presserfoot, it has also a sidemotion imparted to it by means of the connecting rod k, that is hingedat its forward end to the upper part of the presser-foot a, and at itsrear end to a reciprocating lever, l, operated by means of a suitablegrooved camdisk, m, Fig. 1, or its equivalent.

The object of giving a side motion to the presser-foot is to allow theneedle to move the material the length of a stitch without coming incontact with the presser-foot. The object of having the presser-footarranged. centrally with said needle, instead of on one side thereof, asformerly done, is so as to be able to operate easily around sharp curvesor angles without injury to the material that is sewed.

The needle n is operated up and down in the ordinary rocking post 0, andcomes up on one side of thewpresser foot and goes down on the other sidethereof, but is central with the presser-foot when the said needle is inits central position. The presser-foot is moved upward by the rod f andits connecting parts, and sidewise by means of the rod is and itsconnecting parts, during which time the material is moved forward thelength of a stitch.

In Fig. 4, p representsa lever hinged to the sewing-machine frame, andprojecting under the spring-bar c for the purpose of raising thepresser-foot up from the work-plate in the usual manner.

What I wish to secure by Letters Patent, and claim, is-

In combination with the hinged presser-foot a, the awl-bar, or itsequivalent, and the arm 9 and rod f, the rocking lever l, oritsequivalent, and rod is, as herein set forth, for the purpose ofgiving a horizontal and vertical motion to the presser-foot.

In testimony that I claim the foregoing I have hereunto set my hand this14th day of May, 1873.

. EDWIN E. BEAN. Witnesses:

ALBAN ANDREN, JOHN R. HEARD.

